Doesn't my body make enough collagen by itself?

Collagen production in our bodies begins to diminish at the age of 21. From then on, collagen production decreases 1% more per year. Collagen loss causes skin to lose its elasticity, hair to become thinner, and nails to become prone to breaking. With the intake of BioSil, your collagen-producing cells are stimulated to regenerate the lost collagen. This is clinically proven.